Acupuncture is one of the best-known parts of traditional Chinese medicine (TCM) — and one of the most misunderstood. It involves placing very thin needles at specific points on the body, called acupoints, to support health and ease discomfort. The practice has been used in China for more than two thousand years, and today it is offered in hospitals and clinics around the world. This guide explains what actually happens in a session, what the needles feel like, what modern research shows, and how to stay safe. No prior knowledge is needed.
What Happens in a Session
A first visit usually starts with a conversation. The practitioner asks about your health history, sleep, digestion, energy, and the problem that brought you in. They may look at your tongue and feel your pulse at the wrist — in TCM these are standard parts of diagnosis, not small talk. You can read more about the tongue part in our guide to tongue diagnosis.
Then comes the needling. The needles are hair-thin, sterile, and used once before being thrown away. The practitioner inserts them at acupoints, which sit along pathways called channels that run through the body. A session often uses somewhere between five and twenty needles, and they usually stay in place for about fifteen to thirty minutes while you rest. Many clinics leave you lying quietly in a dim room during this time, and some people fall asleep.
Treatment is rarely a single visit. A practitioner often suggests a short course — for example, once or twice a week for several weeks — and adjusts the points as your condition changes. A first appointment usually takes forty-five to sixty minutes; follow-ups are often shorter.
What Does It Feel Like?
Most people are surprised by how little they feel. The needles are far thinner than the ones used for injections or blood tests, and many insertions are barely noticeable. You may feel a brief pinch as a needle goes in, and then a dull ache, a feeling of heaviness, a tingle, or warmth around the point. Practitioners call this sensation de qi (得气), and they often look for it as a sign the point has been reached.
During the resting period, most people feel calm and relaxed. After the needles are removed, a little soreness or a small bruise can appear where a needle was placed, and a few people feel lightheaded for a short while. Most people go straight back to normal activities. If you feel unwell after a session, tell your practitioner and, if needed, your doctor.
What Does Modern Research Say?
This is where the picture gets interesting, because acupuncture has been studied more than almost any other traditional therapy — and the results are genuinely mixed.
The strongest evidence is for chronic pain. A large analysis published in the Journal of Pain in 2018 (Vickers and colleagues) combined individual patient data from 39 trials with 20,827 participants, and found that acupuncture was better than both sham acupuncture and no acupuncture for chronic musculoskeletal pain, osteoarthritis pain, and chronic headache. The effect was real but modest — acupuncture helped, but it did not erase pain. The UK's National Institute for Health and Care Excellence (NICE) recommends acupuncture as an option for chronic primary pain in its 2021 guideline.
There is also good support for nausea. Reviews by the Cochrane Collaboration have found that stimulating the point known as P6, on the inner wrist, helps reduce nausea after surgery and during chemotherapy. For headaches, Cochrane reviews found that acupuncture reduces how often tension-type headaches and migraines occur.
For many other conditions, the evidence is thinner or unclear. Studies vary widely in quality, and one honest complication is that sham acupuncture — needles placed at non-acupoints, or devices that do not pierce the skin — often helps people too. That tells us that part of the effect may come from the ritual, the attention, and the body's own response, not only from the specific points. Researchers are still working out how much each part matters.
The fair summary is this: acupuncture is a reasonable option for some kinds of chronic pain, headache, and nausea, worth discussing with your doctor. It will not fix everything, and anyone who promises otherwise is selling something, not practicing medicine.
Is It Safe?
When performed by a trained practitioner using sterile, single-use needles, acupuncture is generally considered safe. In the United States, the Food and Drug Administration has regulated acupuncture needles as Class II medical devices since 1996, requiring them to be sterile and used only once.
The most common side effects are minor: a drop of blood at the insertion site, a small bruise, mild soreness, or brief lightheadedness. Serious problems are rare. The ones doctors worry about — infection, or a needle puncturing the lung — happen very seldom, and the risk rises sharply when needles are used by someone without proper training or with poor hygiene. That is why the choice of practitioner matters more than almost anything else.
Who Should Be Careful
Most people can receive acupuncture, but a few situations call for extra care. Tell your practitioner before treatment if any of these apply to you:
- You are pregnant. Some points are traditionally avoided during pregnancy, and your practitioner will adjust the treatment.
- You have a bleeding disorder or take blood thinners. The risk of bruising and bleeding is higher.
- You have a pacemaker. This matters mainly if the practitioner uses electroacupuncture, which passes a small current through the needles.
- You have a skin infection or an open wound where needles would be placed.
- You are afraid of needles. This is common and worth mentioning — a good practitioner will talk it through with you rather than dismiss it.
Children can receive acupuncture, but pediatric treatment is different and shorter, and parents should seek someone with specific training in treating children.
Finding a Good Practitioner
Regulation varies by country, so the title to look for depends on where you live. In the United States, look for certification by the National Certification Commission for Acupuncture and Oriental Medicine (NCCAOM) and a state license. In the United Kingdom, practitioners are registered with their local authority, and many belong to a professional body such as the British Acupuncture Council. In China, acupuncture is practiced by licensed doctors of traditional Chinese medicine. Elsewhere, look for recognized training and a professional association.
Before you book, it is worth asking a few questions: What training have you completed? Do you use sterile, single-use needles? What would a course of treatment look like, and what will it cost? A good practitioner will answer plainly and will also ask about your medical history and medicines. Be cautious of anyone who promises to fix a serious illness, who does not ask about your health, or whose clinic looks unclean.
A Balanced View
Acupuncture is a practice with a long history and a growing body of modern research behind it — strongest for some kinds of pain, headache, and nausea, and far less certain elsewhere. The needles are thin, the risks are low when the practitioner is trained, and the experience is usually far gentler than people expect. If you are curious, the best next step is a conversation with a qualified practitioner and your own doctor, so the decision is made with full information rather than hope or fear.
If you would like to understand the ideas behind the needles, our guides to what qi is and the channels acupoints sit on explain the traditional framework in plain language.
If these ideas resonate, Huangdi Neijing: A Modern Introduction explains the classical foundations — the seasons, the body's rhythms, and the habit of living with the year rather than against it — in clear, beginner-friendly language (Huangdi Neijing: A Modern Introduction).
This article is for general wellness education and is not medical advice.